The hereditarians are flat out wrong on IQ. They always say that there is an environmental effect on IQ, but then whenever you show them any evidence of it, they immediately shoot it down. There are few hereditarian researchers on IQ who actually acknowledge evidence for an environmental effect on IQ.
Arthur Jensen, Philippe Rushton and the snide, upper class, snooty, antisocial atavists over at Gene Expression lead the pack. Since nearly the entire HBD/race realist sphere follows the line of Jensen and Rushton, nearly this entire sphere has rejected all evidence for a direct effect of the environment on IQ. Every time we show them they evidence, they shoot it down.
Nearly all White racists and especially White nationalists reject all evidence for an environmental effect on IQ and shoot down any evidence they throw up.
White nationalists have a lot at stake in this debate.
White nationalism is founded on the idea that European Whites are a genetically superior race, and most of the other races, including Blacks, Bushmen, Pygmies, Eskimos, Amerindians, mestizos, mulattos, Polynesians, Melanesians, Micronesians, Southeast Asians, Papuans, Aborigines and Negritos are all quite genetically inferior in intelligence.
They also throw in all non-European Whites as genetically inferior in brains, including Arabs, North Africans, Iranians, Afghans, East Indians and the people of the Stans. Since most White nationalists are Nordicists, Southern Europeans and the people of the Caucasus are also thrown in as intellectually genetically inferior.
There isn’t much evidence for this, as Southern Europeans and the people of the Caucasus in general have IQ’s that are quite high. Furthermore, Eskimo and Maori IQ is high. The IQ’s of many groups in the US, including Mexicans, East Indians and Africans, are also quite high.
When we suggest that there are environmental effects on IQ, we shoot down their whole theory of genetic intellectual superiority and upset their whole theoretical worldview.
But there is quite a bit of evidence for environmental effects on IQ.
Wild IQ rises in the 20th century, mostly in the developed world, are impossible to explain by genetics.
The much higher IQ of US Blacks as opposed to other Blacks is hard to explain by genetics, though WN’s and the Gene Expression authors never tire of retarded explanations. The WN explanation for the 20 pt difference between US and African Black IQ is that it is explained by White blood in US Blacks. This explanation is retarded as it can only explain 4.5 points of the gap, leaving the other 15.5 points unexplained.
The Gene Expression folks say that African IQ is artificially lowered by malnutrition (they invoke environment only when it suits their hereditarian bias and reject it the rest of the time). Therefore, normative Black IQ is 80, and US Black IQ of 87 is also explained by White blood. But there is no evidence for their theory.
The White nationalists and their HBD buddies also pour cold water on the Flynn Effect showing massive IQ rises in the 20th Century. According to them, while IQ has actually increased, real intelligence has not gone up one single iota. The FE IQ’s are not on some BS called “g intelligence,” therefore they are nothing, meaningless ephemera. People are not getting smarter at all, not even 1%. Never mind that Flynn rises are typically accompanied by massive increases in head size, which would suggest real intelligences rise.
For instance there have been 22 different studies of IQ and breastfeeding, all the way up to age 50. All of these studies found cognitive benefits from breastfeeding. On the contrary, hereditarians recently championed one study that found no de novo effect for breastfeeding on IQ. Instead, the differences were tied up with mother’s IQ’s. That is, smarter mothers breastfed more and stupider ones did not. I will take 22 studies over one any day. (Sternberg and Grigorenko 1971, p. 128)
The effects of nutritional supplementation in pregnancy on IQ of offspring have been studied.
Nutritional supplementation in pregnancy and later supplementation of children has been shown to have effects at age 24 in Guatemala (1980) and age 18 in Mexico (1982). Mexican boys improved on IQ, and Guatemalans improved on a range of cognitive and achievement outcomes. (Sternberg and Grigorenko 1971, p. 124)
Lead levels in blood have a strong effect on IQ, leading to declines of up to 10-15 points. There is a clear cause effect relationship between blood levels and IQ. Blood lead levels are higher in Blacks than in Whites, because Blacks tend to liver in older dilapidated housing that has lead paint. Black children apparently ingest the paint chips somehow.
Iron level in the blood also effects IQ. The less iron, the lower the IQ.
Studies have consistently shown that malnutrition leads to low IQ and antisocial behavior in childhood. Iron deficiency is quite high in US Blacks and Hispanics.
One controlled study found that children who were severely malnourished in childhood ended up with IQ’s of 84 when returned to the home, 82 when institutionalized and 97 when adopted away (Sternberg and Grigorenko 1971, p. 123).
A study in South Africa showed that intensive courses in college teaching Black college students the types of intelligence that are tested for on IQ tests quickly raised IQ’s from 83 to 97. Students were generally aged 18-22, above the age where environment is said to effect IQ. Even Philippe Rushton agreed that scores went up in this study, but he had some retarded reason why this had no effect on his hereditarian theories (Rushton and Jensen 2005).
It is a common canard among White nationalist and hereditarian circles that all early intervention programs designed to raise IQ have not been able to do so. It’s true that they often do not raise IQ, but they have other benefits. What matters is whether these programs are cost-effective or not.
Yet some very intensive programs have been successful. The Abecedarian and Perry Preschool projects (Sternberg and Grigorenko 1971, p. 108) showed long-term rises in achievement scores lasting all the way into adolescence. Abecedarian found rises of 4.5 IQ points all the way into adulthood. The problem is that Abecedarian was quite expensive. Whether 4 point IQ gains could occur in large populations given this treatment and whether this would be cost-effective is not known.
- Rushton, J. Philippe and Arthur R., Jensen. 2005. Wanted: More Race Realism, Less Moralistic Fallacy. Psychology, Public Policy, and Law. Vol. 11, No. 2, 328–336.
Sternberg, Robert J. and Grigorenko, Elena. 1971. Environmental Effects on Cognitive Abilities. New York: Routledge Psychology Press.